Calling cards

One of the methods that are used when you want to play more doubles on one ballot, and thereby reduce the likelihood that you “screw up one pair of” the calling cards.

6 events in 6 papers
The required number of hits: 4 of 6
Recommended ratio: about 2.0
Chooses the 6 couples who want to play and numbered from 1 to 6 Couples can then invite ballots by the following scheme:
Slip 1:
Doubles: 1, 2 and 5
Slip 2:
Doubles: 1, 2 and 6
Slip 3:
Doubles: 1, 3 and 4
Slip 4:
Doubles: 2, 3 and 4
Slip 5:
Doubles: 3, 5 and 6
Slip 6:
Pairs: 4, 5 and 6
To ensure that at least one winning ticket is necessary to hit the 4 pairs. This is not only back but has invested earnings.
Gain is also possible to hit only 3 pairs.
Try this system FortunaWin bookmaker.

8 events in 6 papers
This system is used when taking couples with lower odds.
The required number of hits: 6 of 8
Recommended ratio: about 1.6
Chooses to 8 couples who want to play and numbered from 1 to 8 Couples can then invite ballots by the following scheme:
Slip 1:
Doubles: 1, 2, 3 and 4
Slip 2:
Doubles: 1, 4, 5 and 8
Slip 3:
Doubles: 1, 5, 6 and 7
Slip 4:
Doubles: 2, 3, 5 and 8
Slip 5:
Doubles: 2, 3, 6 and 7
Slip 6:
Pairs: 4, 6, 7 and 8
To ensure that at least one winning ticket must hit 6 doubles. This is not only back but has invested earnings.
Gain is also possible to hit just 4 or 5 pairs.
Try this system at Bet-at-home betting.
7 events in 7 papers
The required number of hits: 5 of 7
Recommended ratio: about 1.8
Chooses to 7 couples who want to play and marked with numbers from 1 to 7 Couples can then invite ballots by the following scheme:
Slip 1:
Doubles: 1, 2, 3 and 4
Slip 2:
Doubles: 1, 2, 5 and 6
Slip 3:
Doubles: 1, 3, 5 and 7
Slip 4:
Doubles: 1, 4, 6 and 7
Slip 5:
Doubles: 2, 3, 6 and 7
Slip 6:
Doubles: 2, 4, 5 and 7
Slip 7:
Doubles: 3, 4, 5 and 6

To ensure that at least one winning ticket is necessary to hit 5 doubles. This is not only back but has invested earnings.
Gain is also possible with battered by only 4 pairs.